Synthesis and photoluminescent properties of ZnO:Cu/ZnO core/shell nanocrystals

Mei hui Li; Xi ming Chen; Jian ping Xu; Xiao song Zhang; Yan yu Wu; Ping Li; Xi ping Niu; Cheng yuan Luo; Lan Li

doi:10.1007/s11801-012-2023-1

Synthesis and photoluminescent properties of ZnO:Cu/ZnO core/shell nanocrystals

Mei hui Li, Xi ming Chen, Jian ping Xu, Xiao song Zhang, Yan yu Wu, Ping Li, Xi ping Niu, Cheng yuan Luo, Lan Li

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

ZnO:Cu/ZnO core/shell nanocrystals are synthesized by a two-step solution-phase process. The morphology, structure and optical properties of the samples are detected by scanning electron microscopy, Raman, absorption and luminescence spectroscopy. The increase of particle size confirms the growth of ZnO shell. The segregation of CuO phase observed in ZnO: Cu core is not detected in ZnO:Cu/ZnO core/shell nanocrystals from Raman spectra. It is suggested that some Cu ions can be segregated from ZnO nanocrystals, and the separated Cu ions can be incorporated inside ZnO shell after the growth of ZnO shell. The visible emission mechanism is discussed in detail, and the photoluminescence analysis indicates that the core/shell structure helps to eliminate the surface-related emission.

Original language	English
Pages (from-to)	241-244
Number of pages	4
Journal	Optoelectronics Letters
Volume	8
Issue number	4
DOIs	https://doi.org/10.1007/s11801-012-2023-1
State	Published - Jul 2012
Externally published	Yes

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title = "Synthesis and photoluminescent properties of ZnO:Cu/ZnO core/shell nanocrystals",

abstract = "ZnO:Cu/ZnO core/shell nanocrystals are synthesized by a two-step solution-phase process. The morphology, structure and optical properties of the samples are detected by scanning electron microscopy, Raman, absorption and luminescence spectroscopy. The increase of particle size confirms the growth of ZnO shell. The segregation of CuO phase observed in ZnO: Cu core is not detected in ZnO:Cu/ZnO core/shell nanocrystals from Raman spectra. It is suggested that some Cu ions can be segregated from ZnO nanocrystals, and the separated Cu ions can be incorporated inside ZnO shell after the growth of ZnO shell. The visible emission mechanism is discussed in detail, and the photoluminescence analysis indicates that the core/shell structure helps to eliminate the surface-related emission.",

author = "Li, {Mei hui} and Chen, {Xi ming} and Xu, {Jian ping} and Zhang, {Xiao song} and Wu, {Yan yu} and Ping Li and Niu, {Xi ping} and Luo, {Cheng yuan} and Lan Li",

year = "2012",

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doi = "10.1007/s11801-012-2023-1",

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T1 - Synthesis and photoluminescent properties of ZnO:Cu/ZnO core/shell nanocrystals

AU - Li, Mei hui

AU - Chen, Xi ming

AU - Xu, Jian ping

AU - Zhang, Xiao song

AU - Wu, Yan yu

AU - Li, Ping

AU - Niu, Xi ping

AU - Luo, Cheng yuan

AU - Li, Lan

PY - 2012/7

Y1 - 2012/7

N2 - ZnO:Cu/ZnO core/shell nanocrystals are synthesized by a two-step solution-phase process. The morphology, structure and optical properties of the samples are detected by scanning electron microscopy, Raman, absorption and luminescence spectroscopy. The increase of particle size confirms the growth of ZnO shell. The segregation of CuO phase observed in ZnO: Cu core is not detected in ZnO:Cu/ZnO core/shell nanocrystals from Raman spectra. It is suggested that some Cu ions can be segregated from ZnO nanocrystals, and the separated Cu ions can be incorporated inside ZnO shell after the growth of ZnO shell. The visible emission mechanism is discussed in detail, and the photoluminescence analysis indicates that the core/shell structure helps to eliminate the surface-related emission.

AB - ZnO:Cu/ZnO core/shell nanocrystals are synthesized by a two-step solution-phase process. The morphology, structure and optical properties of the samples are detected by scanning electron microscopy, Raman, absorption and luminescence spectroscopy. The increase of particle size confirms the growth of ZnO shell. The segregation of CuO phase observed in ZnO: Cu core is not detected in ZnO:Cu/ZnO core/shell nanocrystals from Raman spectra. It is suggested that some Cu ions can be segregated from ZnO nanocrystals, and the separated Cu ions can be incorporated inside ZnO shell after the growth of ZnO shell. The visible emission mechanism is discussed in detail, and the photoluminescence analysis indicates that the core/shell structure helps to eliminate the surface-related emission.

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DO - 10.1007/s11801-012-2023-1

M3 - 文章

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SN - 1673-1905

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SP - 241

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JO - Optoelectronics Letters

JF - Optoelectronics Letters

IS - 4

ER -

Synthesis and photoluminescent properties of ZnO:Cu/ZnO core/shell nanocrystals

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